/*
 * Copyright 2011 group coding kata nantes
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package fr.coding.kata.nantes.roman.stephane;

import java.util.List;

import fr.coding.kata.nantes.roman.commons.RomanCalculatorInterface;

public class RomanCalculator implements RomanCalculatorInterface {

    private final NumeralsToRoman toRoman = new NumeralsToRoman();
    private final RomanToNumerals toNumeral = new RomanToNumerals();

    private List<String> operands;

    @Override
    public RomanCalculatorInterface with(final List<String> romans) {
        operands = romans;
        return this;
    }

    @Override
    public String call() throws Exception {
        int sum = 0;
        for (final String roman : operands) {
            sum += toNumeral.with(roman).call();
        }

        return toRoman.with(sum).call();
    }
}
